SGER: Exploratory Study on Aerosol Synthesis of Nanoparticles (Effect of Electric Fields in Flame Reactors)

SGER：纳米颗粒气溶胶合成的探索性研究（火焰反应器中电场的影响）

• 批准号: 9612107
• 负责人: Sotiris Pratsinis
• 金额: $ 5.4万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-15 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9612107&HistoricalAwards=false
• 关键词: SGER; Exploratory; Study; Aerosol; Synthesis

ABSTRACT CTS-9612107 The effects of particle charging in synthesis of nanosize ceramic powders in simple flame aerosol reactors will be investigated. On this basis, the validity of a predictive model which would indicate the electric fields can reduce the particle size and narrow the size distribution will be tested. There are conflicting opinions in aerosol community concerning the effect of the electrical field on particle size and size distribution. The role of charging will be tested in premixed flames. Synthesis of oxides of Ti, Si and Sn will be obtained from their chlorides. The particles will be charged either by ionic wind in the flame by a corona discharge or by orienting the ions generated in the flame to external electrodes. The materials to be tested were selected because of their diverse material properties and their technological relevance. The proposed concepts may lead to significant improvements in generation of finer, uniform nanoparticles, eventually with controlled cristallinity, at large production rates, if the proof-of-concept tests will be successful. Direct applications of the research are in manufacture of fumed silica powders and titania for pigments, ceramics, semiconductors and cosmetics

摘要CTS-9612107将研究粒子充电在简单火焰气溶胶反应器中合成纳米粉的纳米粉的影响。 在此基础上，预测模型的有效性表明电场可以减少粒径，并将测试尺寸分布狭窄。 气溶胶社区对电场对粒径和尺寸分布的影响有矛盾的意见。 充电的作用将在预混合火焰中测试。 Ti，Si和SN的氧化物的合成将从其氯化物中获得。 颗粒将通过电晕放电或将火焰中产生的离子定向到外部电极的离子风在火焰中充电。 选择要测试的材料是因为它们具有多种材料特性及其技术相关性。 提出的概念可能会导致较细，均匀的纳米颗粒的产生显着改善，最终以受控的cristallation的生产速率，如果概念证明测试成功。 该研究的直接应用是制造颜料，陶瓷，半导体和化妆品的烟气粉末和钛